Make tools, fittings, and small metal pieces used in other products.
Tests products, such as armatures, fans, and rotors for balance, using static balancer, and adds or removes metal from product to correct imbalance: Rolls parts on two parallel, level, knife edges or rotates part on two pairs of overlapping, narrow, faced rollers and observes point of rest. Removes excess metal from heavy areas, using drill press, bench grinder, chisel and hammer, or files. Adds rivets, washers, or metal wedges to light areas, using handtools to correct balance. May attach parts to mandrel for balancing. May be designated according to part balanced as Armature Balancer; Fan Balancer; Rotor Balancer.